Depression struggles to take hold in a body that keeps moving. Every step, stretch, or workout sparks a surge of serotonin, dopamine, and endorphins—the brain’s natural mood boosters. At the same time, movement increases BDNF, a key protein that rewires the brain for resilience, lowers stress hormones like cortisol, improves sleep, and boosts blood flow to the brain. All of this creates a powerful neurochemical environment that fights off depressive states, proving that motion isn’t just exercis